Closure for boxes, trunks, and the like



Oct. 4, 1927. v A SCHULZE HWENTOR 1 79/ /7- f. SCHULZE WMd A HTTORA/EKS Patented Oct. 4, 1927.

UNITED STATES MAX AUGUST EDUARD SCHULZE, OF HAMBURG, GERMANY.

CLOSURE FOR BOXES, TRUNKS, AND THE LIKE.

Application filed January 23, 1926, Serial No. 83,341, and in Germany February 12, 1925.

The present invention relates to the closing of boxes, trunks and the like by means of cramps and nails. The object of the 010- sure is to render any attempt at theft noticeable as by the forcible removal of the closure portions of the wood will be torn away. This result would not be obtained if it is possible to withdraw the nails as it would then be possible to withdraw the cramp without any traces being made visible on the wood. The present invention is adapted to remedy this disadvantage by combining two or more U-ohaped cramps so. as to form a single cramp with four or more limbs. When driving in the nail the limbs are bent to such an extent as to clamp between them the wood portions so that any attempt to withdraw the cramp would cause pieces of wood to be torn away. In this manner considerable damage is done to the box or the like and any theft would at once be observed. r

In the drawing is illustrated one example of construction in accordance with the 1nvention. V V

Figure 1 is a front elevation.

Figure 2 is a side. elevation.

Figure 3 is a plan of the cramp. I

Figure 4 is a front elevation of the nail,

and

Figure 5 is a side elevation of a closure in position on a box.

The U-shaped metal cramp a is strength-e ened by means of a smaller metal cramp 6 provided thereon and supported by the cramp a. 1

The cramp thus formed is therefore of double U-shape and is provided with four limbs 0 through which the nail d, which has been driven in, must be withdrawn if it is to be forcibly drawn out. The wood between the limbs is thus clamped between the limbs so that when forcibly withdrawing the cramp the wood is torn away and would thus render any theft visible.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is A closure for boxes and the like, includ ing a pair of U-shaped cramps having their bight portions secured together and their limbs disposed in alignment with each other and each limb of one cramp being in close proximity to a limb ofthe other cramp to compress between each pair of adjacent limbs a narrow strip of the material of the .box when the cramps arevdriven into the latter, said limbs all having aligned openings therein adjacent said bight portions, and a fastener operable when driven through all of said openingsto weaken the material of said strips between said fastener and the outer surface of the material next to said bight portions whereby the withdrawal of said cramps will cause the material of said 66 strips between said adjacent limbs and the opening formed by said fastener to be at least partially torn from the remainder of the material of the box. l

In testimony whereof I have aifixed my 70 signature.

MAX AUGUST EDUARD SCHULZE. 

